Critical security update for Hyper-V (Win8.1, 2008 – 2012 R2)

This security update resolves vulnerabilities in Microsoft Windows. The vulnerabilities could allow remote code execution in a host context if a specially crafted application is run by an authenticated and privileged user on a guest virtual machine hosted by Hyper-V. An attacker must have valid logon credentials for a guest virtual machine to exploit this vulnerability.

This security update is rated Critical for Windows Hyper-V on Windows Server 2008, Windows Server 2008 R2, Windows 8 and Windows Server 2012, and Windows 8.1 and Windows Server 2012 R2. For more information, see the Affected Software section.

The security update addresses the vulnerabilities by correcting how Hyper-V initializes system data structures in guest virtual machines. For more information about the vulnerabilities, see the Vulnerability Information section.

Hyper-V Network Virtualization (HNV): updates and hotfixes

This article documents recommended hotfixes, product updates, and known solutions that are currently available for Windows Server 2012 and Windows Server 2012 R2 Hyper-V Network Virtualization (HNV) environments.

MS is keeping this KB up-to-date. Must be added to bookmarks.

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